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Columbia Community Unit School District 4, Illinois

Columbia Community Unit School District 4 is a unified school district in Monroe County and St. Clair County, Illinois, for grades Pre-K to 12. About 13,590 people live in it (2020–2024 estimate). It covers 48.8 sq mi (126 km²) of land.

ChicagoAurora
Columbia Community Unit School District 4 in Illinois
Mehlville R-IX School District
Columbia Community Unit School District 4 and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Population, 2020–2024 estimate
13,590 ± 528
Grades
Pre-K to 12
Type
Unified school district
Counties
Monroe County80% of the district’s landSt. Clair County20% of the district’s land
Land area
48.8 sq mi (126 km²)
Median household income
$108,573 ± $9,189
Median home value
$302,500 ± $21,088
Water area
2.73 sq mi (7.06 km²)
State
Illinois
Census code (GEOID)
1710740
Coordinates (central point)
38.447470, -90.211200
Check a point in the school district finder

These coordinates mark a central point for the district, not a school or an address. Population, income and home value: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 20, 2026.

Towns, townships and communities in Columbia Community Unit School District 4, largest first

  1. Columbia (city)11,127 people

A town, township, city or borough is listed when at least half its land is in the district; a community, when its central point is. Near a district line, an address can belong to the district next door.

Bordering unified school districts, nearest first

  1. Dupo Community Unit School District 1965.4 mi north
  2. Mehlville R-IX School District, Missouri7.2 mi west
  3. Waterloo Community Unit School District 512 mi south
  4. Valmeyer Community Unit School District 315 mi south

These share a boundary with Columbia Community Unit School District 4. Distances are straight lines between central points.

Before using this answer for enrollment

A district boundary doesn’t decide which school a student attends; the district’s attendance zones and rules do. Confirm the full address and grade with Columbia Community Unit School District 4 before you rely on it.

See its schools and enrollment on NCES ↗

Find the school district where you are now or find your town or township.